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Diffstat (limited to 'compiler/simplCore')
| -rw-r--r-- | compiler/simplCore/OccurAnal.hs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/simplCore/OccurAnal.hs b/compiler/simplCore/OccurAnal.hs index a8cfbc0868..5c0c3b1d89 100644 --- a/compiler/simplCore/OccurAnal.hs +++ b/compiler/simplCore/OccurAnal.hs @@ -2295,6 +2295,9 @@ Core Lint never expects to find an *occurrence* of an Id marked as Dead, so we must zap the OccInfo on cb before making the binding x = cb. See Trac #5028. +NB: the OccInfo on /occurrences/ really doesn't matter much; the simplifier +doesn't use it. So this is only to satisfy the perhpas-over-picky Lint. + Historical note [no-case-of-case] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We *used* to suppress the binder-swap in case expressions when |